Two yellow thunderstorm warnings have been issued by the Met Office for Helensburgh, set to strike just as the heatwave starts to decline.

The alerts are in place on Sunday (August 14) from midday to 6pm and again on Monday (August 15) from 6am until midnight. 

The storms are due to arrive following weeks of high temperatures which has seen a drought declared in several parts of the UK. Now, heavy rain could cause further disruption.

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What do weather warnings mean?

A Met Office spokesperson said: "Whilst some places will avoid them, thunderstorms are likely to develop increasingly widely as we go through Monday.

"Storms will probably already be underway for Northern Ireland and parts of Scotland by early Monday, before also developing across parts of England and Wales by late morning and into the afternoon.

"Storms should begin to ease from the west later. Very locally 20-30mm of rain is possible in an hour, and up to around 50mm in three to six hours. Hail and frequent lightning are also possible."

What to expect from a Yellow Thunderstorm Warning in Helensburgh: 

According to the Met Office, you should expect: 

  • There is a small chance homes and businesses could be flooded quickly, with damage to some buildings from floodwater, lightning strikes, hail or strong winds
  • Where flooding or lightning strikes occur, there is a chance of delays and some cancellations to train and bus services
  • Spray and sudden flooding could lead to difficult driving conditions and some road closures
  • There is a slight chance power cuts could occur and other services to some homes and businesses could be lost